My sister is good at singing. _________ can even sing some French songs.
These Chinese astronauts will stay in the space station _________ six months.
—Mom, _________ I go to the cinema with my classmates this Sunday afternoon? —Yes, of course you can.
The National Library of China is _________ public library in Asia.
—Steve, _________ did you begin to learn how to play chess? —About two years ago.
Janet has done a lot for us, _________ we want to write her a thank-you letter.
Mary _________ a picture when her dad got home yesterday evening,
Charlie _________ his grandparents every weekend. He loves them very much.
—Peter, did you play table tennis with your friends after school yesterday? —No, I didn’t. We _________ vegetables in our school garden.
Many international students _________ to visit our school since last year.
Language learning apps _________ by more and more people these days.
—Linda, do you know _________ for the school trip this term? —Yes. We are going to the Capital Museum.
Tina
Kevin
Nancy
What did Scott learn during his research online?
How did Scott feel at first on that big day?
What did Scott realize at the end of the e-drive event?
What is special about the robotic arm and the controller in Paragraph 2?
What is mentioned in Paragraph 5 about soft robots?
What can we learn from the passage?
Why does the writer introduce the two examples in Paragraph 2?
What does the word “diverge” in the last paragraph most probably mean?
According to the passage, what is-a good example of shaping AI responsibly?
Which of the following is the best title for this passage?
Every summer, Serena spent two weeks at Green Farm’s horseback riding camp. Last year, Serena and her favorite horse Piper finished second in the obstacle course(障碍赛赛道) race. “I can’t wait to ride Piper,” Serena told Rose, her coach. Rose smiled and said, “Sorry, but we need to save Piper for our newer ____13____ this year. She’s one of the best- behaved horses. How about you try riding Harley?” Serena felt ____14____ and was a little scared(害怕的) at the sight of Harley, the tallest horse, but she stayed hopeful. As she was trying to ride Harley, he went up on his back legs, throwing Serena off. She landed on the hard ground, her eyes filled with tears. “I’m scared of Harley, and he’s too hard to ____15____ ,” Serena told Rose. “Harley is in a new place with a new person on his back,” Rose explained. “I’m sure he’s pretty scared, too. But if you trust him, he will trust you.” Serena decided that it was time for a fresh ____16____ . “I know you’re afraid of me. We’re still strangers, and it’s up to me to make sure that we become friends,” she talked to Harley ____17____ . After a while, Harley calmed (平静) down, and Serena realized that she was also feeling calmer. She then led Harley for a walk around the ring so that he could get used to being with her and following her directions. Soon, Serena and Harley made progress together as their confidence in each other ____18____ . By the end of the first week, they had completed the obstacle course together. On the final day of the camp was the bag race. Serena confidently climbed onto Harley. Harley, ____19____ the excitement of the day, ran through the course like a madman and easily won. The other horses were just no match for Harley. Rose handed Serena the winner’s trophy with a wink(眨眼). Serena suddenly realized that Rose had wanted her to ____20____ herself to be a better rider, even though she would have had a nice time with Piper. Serena gave Rose a hug and then took the trophy, and a carrot, over to Harley.
Tina：I want to travel to Africa and see the animals. I’d love to take lots of photos of elephants, giraffes and other animals. I’d like to try sleeping in a tent in the wild. Kevin：I’d like to go to North America. I love to walk in forests, climb trees and hike in the mountains. Perhaps I could go birdwatching, too. I enjoy exploring nature. Nancy：I’ve decided to tour Australia with my family. My plan is to go to the beach, swim in the sea and sit in the sun. Also, we’re going to play volleyball on the beach.
The school year began. As president of the recycling club, Scott was thinking about new activities to encourage other students to become more enthusiastic(热心的) about recycling. His club had helped to recycle a lot of waste for the past five years and he hoped that this year they would do even better. Scott went home one day and looked online, hoping to find ideas for events the club could organize at school. During his research, he learned that the amount(数量) of electronic waste, or e-waste, is increasing rapidly. Scott was upset with himself for not noticing this problem sooner. At that moment, he began to develop a plan. “There is a special project I want us to work on this term,” Scott announced(宣布) at the recycling club meeting the next day. “We have all heard about e- waste, but recently I learned about the bad effects it’s having on our environment.” He went on to tell the club members that he wanted them to organize an e-waste drive—a day when students and their families could drop off unwanted electronics to be recycled. “Now let’s get to work!” For several weeks, the recycling club was busy preparing for the upcoming e-waste drive, or e-drive as it was soon called. The big day finally arrived, and Scott was nervous. He and the other members arrived at school early to make sure that everything would go smoothly. Everyone waited eagerly, hoping that students of the school would take part in the event. It wasn’t long before the first cars pulled into the school parking lot. After a while, more people arrived. Phones, TV sets, computers and keyboards soon began piling up(堆积) . At the end of the event, Scott heard someone suggest that the school should have an e-drive event every term. Scott smiled, realizing that a simple action could truly have a lasting influence.
Imagine a robot. What comes to your mind first? A machine stronger than the human body? However, this same quality is now causing a big problem—it’s creating tons of long-lasting e-waste that could flood our planet. What if, instead, the machines we use were designed to break down and disappear—just as living things do? For a study published in Science Advances, researchers made a robotic arm and a controller using materials from animals and plants. These materials are strong enough to work but can easily break down in a natural environment. After testing, both parts were gone in soil within weeks. Biodegradable (可生物降解的) robotics often falls under the umbrella of soft robotics, which takes ideas from nature. “This field started in materials science and chemistry rather than traditional robots that come from mechanical (机械的) engineering,” says Florian Hartmann, a materials scientist from Germany. However, many early soft robotics models still used man-made materials that cause pollution. Wei, a scientist who studies natural materials in Hangzhou, worked together with his friend Zhang, a robotics engineer in Shanghai, to build robots for the new study. They started with cellulose (纤维素) taken from cotton. Then, they added glycerol (甘油) to make a new material that is soft and easy to change shapes. After that they allowed it to dry so it became strong. “Cellulose is cheap and easy to work with,” says Wei. They found that the controller and the robotic arm stood up to both heavy use and a week of inactivity. Finally, they buried (埋) them both in a hole. Within eight weeks these two parts were almost completely gone. Wei and Zhang expect that robots like these can be used to deal with dangerous waste and then disappear naturally. They also hope that such robots can aid doctors in operations and then safely break down inside the body. However, it’s important to note that the technology is still in very early stages. “If we truly want to have a biodegradable robot,” Hartmann says, “we also need to make sure its electronics and power parts are biodegradable.”
People are talking a lot about artificial intelligence (AI), viewing it as a force that could reshape how society works. But there is something important missing from this discussion. It isn’t enough to ask how it will change us. We also need to understand how we shape AI and what it can tell us about ourselves. Every AI model we develop mirrors our rules and expresses our beliefs. A few years ago, while looking for new workers, a famous company gave up an AI-powered tool after finding it unfavorable to women. The AI was not designed to behave this way;instead, it was influenced by the historical data (数据) favoring men, Similarly, a recent study found that lending algorithms (算法) often offer less favorable terms to colored people, worsening long-standing unfairness in money-lending business. In both cases, AI isn’t creating new biases ( 偏见); it is mirroring the ones that are already present. These reflections (反映) give us an important chance to take a close look at ourselves. By making these problems seen and more pressing, AI challenges us to recognize and address what causes algorithmic bias, As AI continues to develop, we must ask ourselves how we as average people want to shape its role in society. We should not only improve AI models, but also make sure that AI is developed and used responsibly, A number of companies are already taking action. They are judging the data, rules, and beliefs that shape the behavior of AI models, Still, we cannot expect the companies to do all the work. As long as AI is trained on human data, it will reflect human behavior. That means we have to think carefully about the footprints of ourselves we leave in the world. I may value privacy, but if I give it up in a heartbeat to visit a website, the algorithms may make a very different judgment of what I really want and what is good for me. If I want meaningful human connections yet spend more time on social media and less time in the physical company of my friends, I am indirectly training AI models about the true nature of humanity. As AI becomes more powerful, we need to take increasing care to read our principles (原则) into the record of our actions rather than allowing the two to ___diverge___. Recognizing this allows us to make better decisions, but only when we are prepared to look closely and take responsibility for what we see.
时间验证的教学模式，学习英语的可信选择 对标国际语言等级，轻松应对考试